Faucet for oil-cans



u Model') A. H. 'su T. A. SGHLUETER.

FAUGET PoR oIL GANS. No. 509,769. Patented No.v.28,.1893.

Umrnn STATES PATENT OFFICE.

ADOLPH H. SCHLUETER AND THEODORE A. SCHLUETER, OF OAKLAND, CALIFORNIA.

FAUCET FOR OIL-CANS.

SPECIFICATION forming part of Letters Patent No. 509,769, dated November28, 1893.

Application filed November 10,1892. Serial N11-451,517. (No model.)

To @ZZ whom, t may concern,.- l

ABe it known that we, ADoLPH H. SCHLUE- TER and THEODORE A. SCHLUETER,citizens of the United States, residing at Oakland, in the county ofAlameda and State of California, have invented a new and usefulImprovement in Faucets for Oil-Cans and other Liquid-Receptacles, ofwhich the following is a description sufficiently full, clear, and exactto enable any person skilled in the art or science to which saidinvention appertains to make and use the same, reference being had tothe accompanying drawings, forming part of this specification, in which-Figure l is a view in elevation of our faucet attached to a can. Fig. 2represents a view also in elevation of the plug` or valve.

Our invention relates especially to a faucet for drawing oil from cansand other packages containing liquids and fluids under atmosphericpressure and it consists in the novel construction and arrangement ofthe parts as hereinafter more fully set forth and claimed.

The object of our invention is to provide a means whereby the receptacleor lamp into which the oil or liquid from the Vpackage is withdrawn willnot overflow.

The nature and operation of the device will be readily understood by allconversant with such matters from the following explanation, its greatsimplicity rendering an elaborate description unnecessary.

In the drawings A represents an oil-can charged with oil the side ofwhich is perforated to receive the draw-off portion of the faucet, whichportion is turned down to near the bottom of the can so as to take thelast of the liquid therefrom. That portion of the barrel in front of thecock or valve is curved as at B to form a siphon and the lower end isprovided with a strainer O which stands horizontally across the mouth ofthis siphon end and will prevent the oil :from dripping after the cockor valve is closed. The top of the Valve-seat is cast with an extendedthimble D and the cock or valve has the usual draw-off aperture E, andabove this a hole F. extending through the valve. An air-tube Fintersects with the hole EX of the valve passing through the extendedpart of the thimble and along down the outside of the faucet conformingto its curvature terminating with the draw-off portion of the faucet inthe interior of the can A. Then the valve is opened the liquid will tendto iiow through the passage B with a pressure equalto the differencebetween the atmospheric pressure and the pressure on the surface of theliquid in the can, plus the head of liquid at the mouth or outlet end ofsaid passage. There also tends to be a flow through the passage F due tothe difference between the atmospheric pressure and the pressure on thesurface of the liquid in the can plus the height of the column of theliquid at the mouth EX of said passage. The liquid will flow throughboth passages until the pressure on its surface in the can, plus thehead at the mouth of the passage F, equals the atmospheric pressure;whereupon, the fiow in passage B continuing, air will enter passage F,drive the liquid out of it, and enter the can, the mouth of passage Bbeing below the level of the inner end of passage F. Up to this pointthe operation will be found in practice to be almost instantaneous,andlittlev or no liquid will escape through passage F. The air thatenters the can will maintain such a pressure on the surface of theliquid therein that that pressure plus the head of the liquid at theinner end of the air passage will equal the atmospheric pressure. Liquidwill therefore continue to flow through passage B, due to the headproduced by its mouth being lower than the inner end of the air passage.When the surface of the liquid in the receptacle being lled reaches thelevel of the inner end of the air passage, the pressure at the ends ofthe passage B will be equalized, (unless more air enters the can,) andthe flow through said passagewill cease. It is evident that no air cannow enter this passage, its mouth being trapped by the liquid in thereceptacle being filled, neither can an appreciable amount .of air enterthe air passage for this reason. t Suppose a little air to enter: thiswould increase the pressure on the surface of the liquid in the can,which pressure, plus the head of liquid at the inner end of the passage,will then be greater than the atmospheric pressure.

Liquid will then rise in this passage, which, of course, will preventthe entrance of more air. In this manner the receptacle being filledwill be prevented from overflowing. After the receptacle is lled and theflow of liquid through the 4passage B is thus automatically checked, thecock is turned so as to close the passage B and the air tube F.Thereafter, when the receptacle is removed from the outlet end of thepassage, the liquid in the passage which is below the level of the inletend thereof Will be prevented by the presence of the strainer C fromrunning out, Which might allow more liquid than desired' to flow intosaid receptacle. It Will thus be seen that the can will always be underatmospheric pressure and when the cock is open air will ow into the canor receptacle and force the contents out through the faucet and Siphonin a constant manner.

Having thus explained our invention, what We claim, and desire to secureby Letters Patent, is-

l. The combination with an oil can or other closed liquid receptacle; ofa faucet Whose draw-od end enters the side of the can and is turned downto near the bottom thereof, and Whose outlet end is turned down andextends to a lower point than the draw-olf end to form a siphon, ahorizontal strainer across the mouth of the outlet end, an air tubeleading from Within the can at a point ush with said inlet end, outalong the faucet, and through the thimble, and a cock in the latterhavlng openings arranged to open the faucet and air tube simultaneously,as and for the purpose set forth.

2. The combination with an oil can or other closed liquid receptacle; ofa faucet whose draw-off end enters the side of the can and is turneddown to near the bottom thereof, and Whose other end is turned down andextends to a lower point than the draw-off end to form a siphon, an airtube leading from the inlet end of the draw-off portion of the faucet,along the same, out through the side of the can, and through the thimbleto and terminating at the outer side thereof, and a vertically disposedcock in said thimble having horizontal openings arranged to open andclose the faucet and air tube simultaneously, as and for the purpose setforth.

In testimony that We claim the foregoing We have hereunto set our handsand seals.

ADOLPH H. SOHLUETER. [L s] THEoDoRE A. SGHLUETER. [n s] Witnesses:

J. H. TROY, Jr., NEWTON BENEDICT.

